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[PULL 0/1] qemu-openbios queue 20260707

Mark Cave-Ayland posted 1 patch 2 weeks, 4 days ago
Patches applied successfully (tree, apply log)
git fetch https://github.com/patchew-project/qemu tags/patchew/20260707213237.494636-1-mark.cave-ayland@ilande.co.uk
pc-bios/openbios-ppc     | Bin 677200 -> 673104 bytes
pc-bios/openbios-sparc32 | Bin 382080 -> 382048 bytes
pc-bios/openbios-sparc64 | Bin 1593408 -> 1593408 bytes
roms/openbios            |   2 +-
4 files changed, 1 insertion(+), 1 deletion(-)
[PULL 0/1] qemu-openbios queue 20260707
Posted by Mark Cave-Ayland 2 weeks, 4 days ago 
The following changes since commit 916ab315cc2b3a3825ebb399d83339660144d5bd:

  Merge tag 'pull-nvme-20260707' of https://gitlab.com/birkelund/qemu into staging (2026-07-07 07:09:38 +0200)

are available in the Git repository at:

  https://github.com/mcayland/qemu.git tags/qemu-openbios-20260707

for you to fetch changes up to 9e3508dce0045de26ec8cab064443c92fdd15288:

  Update OpenBIOS images to e5ac46dd built from submodule. (2026-07-07 22:07:16 +0100)

----------------------------------------------------------------
qemu-openbios queue

----------------------------------------------------------------
Mark Cave-Ayland (1):
      Update OpenBIOS images to e5ac46dd built from submodule.

 pc-bios/openbios-ppc     | Bin 677200 -> 673104 bytes
 pc-bios/openbios-sparc32 | Bin 382080 -> 382048 bytes
 pc-bios/openbios-sparc64 | Bin 1593408 -> 1593408 bytes
 roms/openbios            |   2 +-
 4 files changed, 1 insertion(+), 1 deletion(-)
Re: [PULL 0/1] qemu-openbios queue 20260707
Posted by Nathan Chancellor 4 days, 8 hours ago 
Hi Mark,

On Tue, Jul 07, 2026 at 10:32:05PM +0100, Mark Cave-Ayland wrote:
> The following changes since commit 916ab315cc2b3a3825ebb399d83339660144d5bd:
> 
>   Merge tag 'pull-nvme-20260707' of https://gitlab.com/birkelund/qemu into staging (2026-07-07 07:09:38 +0200)
> 
> are available in the Git repository at:
> 
>   https://github.com/mcayland/qemu.git tags/qemu-openbios-20260707
> 
> for you to fetch changes up to 9e3508dce0045de26ec8cab064443c92fdd15288:
> 
>   Update OpenBIOS images to e5ac46dd built from submodule. (2026-07-07 22:07:16 +0100)
> 
> ----------------------------------------------------------------
> qemu-openbios queue
> 
> ----------------------------------------------------------------
> Mark Cave-Ayland (1):
>       Update OpenBIOS images to e5ac46dd built from submodule.
> 
>  pc-bios/openbios-ppc     | Bin 677200 -> 673104 bytes
>  pc-bios/openbios-sparc32 | Bin 382080 -> 382048 bytes
>  pc-bios/openbios-sparc64 | Bin 1593408 -> 1593408 bytes
>  roms/openbios            |   2 +-
>  4 files changed, 1 insertion(+), 1 deletion(-)

I bisected a hang that I see when trying to boot a Linux kernel built
from pmac32_defconfig to this change.

  $ git show 9e3508dce0045de26ec8cab064443c92fdd15288:pc-bios/openbios-ppc >openbios-ppc-bad

  $ git show 9e3508dce0045de26ec8cab064443c92fdd15288^:pc-bios/openbios-ppc >openbios-ppc-good

  $ curl -LSs https://github.com/nathanchance/bug-files/raw/main/qemu-9e3508dce0045de26ec8cab064443c92fdd15288/rootfs.cpio.zst | zstd -d >rootfs.cpio

  $ curl -LSs https://github.com/nathanchance/bug-files/raw/main/qemu-9e3508dce0045de26ec8cab064443c92fdd15288/vmlinux.zst | zstd -d >vmlinux

  $ qemu-system-ppc \
      -display none \
      -nodefaults \
      -no-reboot \
      -machine mac99 \
      -append console=ttyS0 \
      -kernel ./vmlinux \
      -initrd ./rootfs.cpio \
      -m 128m \
      -serial mon:stdio \
      -bios ./openbios-ppc-good

  >> =============================================================
  >> OpenBIOS 1.1 [Sep 24 2024 19:56]
  >> Configuration device id QEMU version 1 machine id 1
  >> CPUs: 1
  >> Memory: 128M
  >> UUID: 00000000-0000-0000-0000-000000000000
  >> CPU type PowerPC,G4
  milliseconds isn't unique.
  Output device screen not found.
  Output device screen not found.
  >> [ppc] Kernel already loaded (0x01000000 + 0x00ed2410) (initrd 0x01fd3000 + 0x004fb000)
  >> [ppc] Kernel command line: console=ttyS0
  >> switching to new context:
  NULL ihandle
  Unexpected client interface exception: -2
  printk: legacy console [ttyS0] enabled
  printk: legacy bootconsole [udbg0] disabled
  pid_max: default: 32768 minimum: 301
  Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
  Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
  VFS: Finished mounting rootfs on nullfs
  Memory: 108176K/131072K available (10508K kernel code, 1004K rwdata, 2180K rodata, 1232K init, 178K bss, 21680K reserved, 0K cma-reserved, 0K highmem)
  Found UniNorth PCI host bridge at 0x00000000f2000000. Firmware bus number: 0->0
  ...
  Starting network: OK
  Linux version 7.2.0-rc4+ (nathan@ax162) (powerpc-linux-gcc (GCC) 16.1.0, GNU ld (GNU Binutils) 2.46) #1 PREEMPT Tue Jul 21 16:59:50 MST 2026
  Stopping network:OK
  Stopping klogd: OK
  Stopping syslogd: OK
  Seeding 256 bits without crediting
  seedrng: can't open '/dev/urandom': No such file or directory
  The system is going down NOW!
  Sent SIGTERM to all processes
  Sent SIGKILL to all processes
  Requesting system reboot
  reboot: Restarting system

  $ qemu-system-ppc \
      -display none \
      -nodefaults \
      -no-reboot \
      -machine mac99 \
      -append console=ttyS0 \
      -kernel ./vmlinux \
      -initrd ./rootfs.cpio \
      -m 128m \
      -serial mon:stdio \
      -bios ./openbios-ppc-bad

  >> =============================================================
  >> OpenBIOS 1.1 [Jun 29 2026 21:11]
  >> Configuration device id QEMU version 1 machine id 1
  >> CPUs: 1
  >> Memory: 128M
  >> UUID: 00000000-0000-0000-0000-000000000000
  >> CPU type PowerPC,G4
  milliseconds isn't unique.
  Output device screen not found.
  Output device screen not found.
  >> [ppc] Kernel already loaded (0x01000000 + 0x00ed2410) (initrd 0x01fd3000 + 0x004fb000)
  >> [ppc] Kernel command line: console=ttyS0
  >> switching to new context:
  <hangs with no additional output>

Presumably this is due to OpenBIOS commit b0267d5 ("ppc: bump SAVE_SPACE
to include enough space to store all registers"), as this appears to be
the only actual source change to OpenBIOS? I have not had time to try
running under gdb to get more information about where it is hanging but
I wanted to get this report out sooner rather than later.

-- 
Cheers,
Nathan
Re: [PULL 0/1] qemu-openbios queue 20260707
Posted by Mark Cave-Ayland 1 day ago 
On 22/07/2026 02:15, Nathan Chancellor wrote:

> Hi Mark,
> 
> On Tue, Jul 07, 2026 at 10:32:05PM +0100, Mark Cave-Ayland wrote:
>> The following changes since commit 916ab315cc2b3a3825ebb399d83339660144d5bd:
>>
>>    Merge tag 'pull-nvme-20260707' of https://gitlab.com/birkelund/qemu into staging (2026-07-07 07:09:38 +0200)
>>
>> are available in the Git repository at:
>>
>>    https://github.com/mcayland/qemu.git tags/qemu-openbios-20260707
>>
>> for you to fetch changes up to 9e3508dce0045de26ec8cab064443c92fdd15288:
>>
>>    Update OpenBIOS images to e5ac46dd built from submodule. (2026-07-07 22:07:16 +0100)
>>
>> ----------------------------------------------------------------
>> qemu-openbios queue
>>
>> ----------------------------------------------------------------
>> Mark Cave-Ayland (1):
>>        Update OpenBIOS images to e5ac46dd built from submodule.
>>
>>   pc-bios/openbios-ppc     | Bin 677200 -> 673104 bytes
>>   pc-bios/openbios-sparc32 | Bin 382080 -> 382048 bytes
>>   pc-bios/openbios-sparc64 | Bin 1593408 -> 1593408 bytes
>>   roms/openbios            |   2 +-
>>   4 files changed, 1 insertion(+), 1 deletion(-)
> 
> I bisected a hang that I see when trying to boot a Linux kernel built
> from pmac32_defconfig to this change.
> 
>    $ git show 9e3508dce0045de26ec8cab064443c92fdd15288:pc-bios/openbios-ppc >openbios-ppc-bad
> 
>    $ git show 9e3508dce0045de26ec8cab064443c92fdd15288^:pc-bios/openbios-ppc >openbios-ppc-good
> 
>    $ curl -LSs https://github.com/nathanchance/bug-files/raw/main/qemu-9e3508dce0045de26ec8cab064443c92fdd15288/rootfs.cpio.zst | zstd -d >rootfs.cpio
> 
>    $ curl -LSs https://github.com/nathanchance/bug-files/raw/main/qemu-9e3508dce0045de26ec8cab064443c92fdd15288/vmlinux.zst | zstd -d >vmlinux
> 
>    $ qemu-system-ppc \
>        -display none \
>        -nodefaults \
>        -no-reboot \
>        -machine mac99 \
>        -append console=ttyS0 \
>        -kernel ./vmlinux \
>        -initrd ./rootfs.cpio \
>        -m 128m \
>        -serial mon:stdio \
>        -bios ./openbios-ppc-good
> 
>    >> =============================================================
>    >> OpenBIOS 1.1 [Sep 24 2024 19:56]
>    >> Configuration device id QEMU version 1 machine id 1
>    >> CPUs: 1
>    >> Memory: 128M
>    >> UUID: 00000000-0000-0000-0000-000000000000
>    >> CPU type PowerPC,G4
>    milliseconds isn't unique.
>    Output device screen not found.
>    Output device screen not found.
>    >> [ppc] Kernel already loaded (0x01000000 + 0x00ed2410) (initrd 0x01fd3000 + 0x004fb000)
>    >> [ppc] Kernel command line: console=ttyS0
>    >> switching to new context:
>    NULL ihandle
>    Unexpected client interface exception: -2
>    printk: legacy console [ttyS0] enabled
>    printk: legacy bootconsole [udbg0] disabled
>    pid_max: default: 32768 minimum: 301
>    Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
>    Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
>    VFS: Finished mounting rootfs on nullfs
>    Memory: 108176K/131072K available (10508K kernel code, 1004K rwdata, 2180K rodata, 1232K init, 178K bss, 21680K reserved, 0K cma-reserved, 0K highmem)
>    Found UniNorth PCI host bridge at 0x00000000f2000000. Firmware bus number: 0->0
>    ...
>    Starting network: OK
>    Linux version 7.2.0-rc4+ (nathan@ax162) (powerpc-linux-gcc (GCC) 16.1.0, GNU ld (GNU Binutils) 2.46) #1 PREEMPT Tue Jul 21 16:59:50 MST 2026
>    Stopping network:OK
>    Stopping klogd: OK
>    Stopping syslogd: OK
>    Seeding 256 bits without crediting
>    seedrng: can't open '/dev/urandom': No such file or directory
>    The system is going down NOW!
>    Sent SIGTERM to all processes
>    Sent SIGKILL to all processes
>    Requesting system reboot
>    reboot: Restarting system
> 
>    $ qemu-system-ppc \
>        -display none \
>        -nodefaults \
>        -no-reboot \
>        -machine mac99 \
>        -append console=ttyS0 \
>        -kernel ./vmlinux \
>        -initrd ./rootfs.cpio \
>        -m 128m \
>        -serial mon:stdio \
>        -bios ./openbios-ppc-bad
> 
>    >> =============================================================
>    >> OpenBIOS 1.1 [Jun 29 2026 21:11]
>    >> Configuration device id QEMU version 1 machine id 1
>    >> CPUs: 1
>    >> Memory: 128M
>    >> UUID: 00000000-0000-0000-0000-000000000000
>    >> CPU type PowerPC,G4
>    milliseconds isn't unique.
>    Output device screen not found.
>    Output device screen not found.
>    >> [ppc] Kernel already loaded (0x01000000 + 0x00ed2410) (initrd 0x01fd3000 + 0x004fb000)
>    >> [ppc] Kernel command line: console=ttyS0
>    >> switching to new context:
>    <hangs with no additional output>
> 
> Presumably this is due to OpenBIOS commit b0267d5 ("ppc: bump SAVE_SPACE
> to include enough space to store all registers"), as this appears to be
> the only actual source change to OpenBIOS? I have not had time to try
> running under gdb to get more information about where it is hanging but
> I wanted to get this report out sooner rather than later.

Hi Nathan,

Thanks for the heads-up: nothing showed up in my local tests before committing, so I 
will take a look over the next few days.


ATB,

Mark.
Re: [PULL 0/1] qemu-openbios queue 20260707
Posted by Stefan Hajnoczi 2 weeks, 3 days ago 
Applied, thanks.

Please update the changelog at https://wiki.qemu.org/ChangeLog/11.1 for any user-visible changes.
Re: [PULL 0/1] qemu-openbios queue 20260707
Posted by Philippe Mathieu-Daudé 2 weeks, 4 days ago 
Hi Mark,

On 7/7/26 23:32, Mark Cave-Ayland wrote:
> The following changes since commit 916ab315cc2b3a3825ebb399d83339660144d5bd:
> 
>    Merge tag 'pull-nvme-20260707' of https://gitlab.com/birkelund/qemu into staging (2026-07-07 07:09:38 +0200)
> 
> are available in the Git repository at:
> 
>    https://github.com/mcayland/qemu.git tags/qemu-openbios-20260707
> 
> for you to fetch changes up to 9e3508dce0045de26ec8cab064443c92fdd15288:
> 
>    Update OpenBIOS images to e5ac46dd built from submodule. (2026-07-07 22:07:16 +0100)
> 
> ----------------------------------------------------------------
> qemu-openbios queue
> 

FYI the output of 'git shortlog --no-merges' is welcomed here for
submodule updates, that helps navigating QEMU git history (no need
to respin):

Adrian Chadd (1):
       ppc: bump SAVE_SPACE to include enough space to store all registers

Mark Cave-Ayland (2):
       .github/workflows: update actions to use latest versions
       config/scripts/switch-arch: fix build on aarch64 and riscv64 hosts

Patrick Georgi (1):
       Doc/website: Add a conversion of the MediaWiki site

> ----------------------------------------------------------------
> Mark Cave-Ayland (1):
>        Update OpenBIOS images to e5ac46dd built from submodule.
> 
>   pc-bios/openbios-ppc     | Bin 677200 -> 673104 bytes
>   pc-bios/openbios-sparc32 | Bin 382080 -> 382048 bytes
>   pc-bios/openbios-sparc64 | Bin 1593408 -> 1593408 bytes
>   roms/openbios            |   2 +-
>   4 files changed, 1 insertion(+), 1 deletion(-)
>

Patchew 2.1-devel-ea86937

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